[bs-19] Add samples and CLI support for Spring Integration

$ cd spring-bootstrap-cli
    $ export SPRING_HOME=target
    $ src/main/scripts/spring run samples/integration.groovy

The big disadvantage at the moment is that there is no goo way to
detect Spring Integration in the AST (at least not as good as @Enable*).
So for now we are looking for @MessageEndpoint or a class name with
SpringIntegration in it.

[#48151147]

spring-bootstrap-samples/spring-bootstrap-integration-sample/src/main/java/org/springframework/bootstrap/sample/service/HelloWorldService.java

@@ -0,0 +1,16 @@
+package org.springframework.bootstrap.sample.service;
+
+import org.springframework.beans.factory.annotation.Autowired;
+import org.springframework.stereotype.Component;
+
+@Component
+public class HelloWorldService {
+
+	@Autowired
+	private ServiceProperties configuration;
+
+	public String getHelloMessage(String name) {
+		return this.configuration.getGreeting() + " " + name;
+	}
+
+}

spring-bootstrap-samples/spring-bootstrap-integration-sample/src/main/java/org/springframework/bootstrap/sample/service/IntegrationBootstrapApplication.java

@@ -0,0 +1,21 @@
+package org.springframework.bootstrap.sample.service;
+
+import org.springframework.bootstrap.SpringApplication;
+import org.springframework.bootstrap.context.annotation.EnableAutoConfiguration;
+import org.springframework.bootstrap.service.annotation.EnableConfigurationProperties;
+import org.springframework.context.annotation.ComponentScan;
+import org.springframework.context.annotation.Configuration;
+import org.springframework.context.annotation.ImportResource;
+
+@Configuration
+@EnableAutoConfiguration
+@EnableConfigurationProperties(ServiceProperties.class)
+@ComponentScan
+@ImportResource("integration-context.xml")
+public class IntegrationBootstrapApplication {
+
+	public static void main(String[] args) throws Exception {
+		SpringApplication.run(IntegrationBootstrapApplication.class, args);
+	}
+
+}

spring-bootstrap-samples/spring-bootstrap-integration-sample/src/main/java/org/springframework/bootstrap/sample/service/SampleEndpoint.java

@@ -0,0 +1,22 @@
+package org.springframework.bootstrap.sample.service;
+
+import java.util.Collections;
+import java.util.Map;
+
+import org.springframework.beans.factory.annotation.Autowired;
+import org.springframework.integration.annotation.MessageEndpoint;
+import org.springframework.integration.annotation.ServiceActivator;
+
+@MessageEndpoint
+public class SampleEndpoint {
+
+	@Autowired
+	private HelloWorldService helloWorldService;
+
+	@ServiceActivator
+	public Map<String, String> hello(String input) {
+		return Collections.singletonMap("message",
+				this.helloWorldService.getHelloMessage(input));
+	}
+
+}

spring-bootstrap-samples/spring-bootstrap-integration-sample/src/main/java/org/springframework/bootstrap/sample/service/ServiceProperties.java

@@ -0,0 +1,33 @@
+/*
+ * Copyright 2012-2013 the original author or authors.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+package org.springframework.bootstrap.sample.service;
+
+import org.springframework.bootstrap.context.annotation.ConfigurationProperties;
+
+@ConfigurationProperties(name = "service", ignoreUnknownFields = false)
+public class ServiceProperties {
+
+	private String greeting = "Hello";
+
+	public String getGreeting() {
+		return this.greeting;
+	}
+
+	public void setGreeting(String greeting) {
+		this.greeting = greeting;
+	}
+
+}

spring-bootstrap-samples/spring-bootstrap-integration-sample/src/main/resources/application.properties

@@ -0,0 +1,2 @@
+logging.file: /tmp/logs/app.log
+service.greeting: Hello

spring-bootstrap-samples/spring-bootstrap-integration-sample/src/main/resources/integration-context.xml

@@ -0,0 +1,11 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<beans xmlns="http://www.springframework.org/schema/beans"
+	xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
+	xmlns:int="http://www.springframework.org/schema/integration"
+	xsi:schemaLocation="http://www.springframework.org/schema/integration http://www.springframework.org/schema/integration/spring-integration.xsd
+		http://www.springframework.org/schema/beans http://www.springframework.org/schema/beans/spring-beans.xsd">
+
+	<int:channel id="input"/>
+	<int:service-activator input-channel="input" ref="sampleEndpoint"/>
+
+</beans>

spring-bootstrap-samples/spring-bootstrap-integration-sample/src/test/java/org/springframework/bootstrap/sample/service/IntegrationBootstrapApplicationTests.java

@@ -0,0 +1,60 @@
+package org.springframework.bootstrap.sample.service;
+
+import java.util.concurrent.Callable;
+import java.util.concurrent.Executors;
+import java.util.concurrent.Future;
+import java.util.concurrent.TimeUnit;
+
+import org.junit.AfterClass;
+import org.junit.BeforeClass;
+import org.junit.Test;
+import org.springframework.bootstrap.SpringApplication;
+import org.springframework.context.ConfigurableApplicationContext;
+import org.springframework.integration.Message;
+import org.springframework.integration.core.MessagingTemplate;
+import org.springframework.integration.support.MessageBuilder;
+import org.springframework.integration.support.channel.BeanFactoryChannelResolver;
+
+import static org.junit.Assert.assertEquals;
+
+/**
+ * Basic integration tests for service demo application.
+ * 
+ * @author Dave Syer
+ * 
+ */
+public class IntegrationBootstrapApplicationTests {
+
+	private static ConfigurableApplicationContext context;
+
+	@BeforeClass
+	public static void start() throws Exception {
+		Future<ConfigurableApplicationContext> future = Executors
+				.newSingleThreadExecutor().submit(
+						new Callable<ConfigurableApplicationContext>() {
+							@Override
+							public ConfigurableApplicationContext call() throws Exception {
+								return (ConfigurableApplicationContext) SpringApplication
+										.run(IntegrationBootstrapApplication.class);
+							}
+						});
+		context = future.get(10, TimeUnit.SECONDS);
+	}
+
+	@AfterClass
+	public static void stop() {
+		if (context != null) {
+			context.close();
+		}
+	}
+
+	@Test
+	public void testVanillaExchange() throws Exception {
+		MessagingTemplate template = new MessagingTemplate();
+		template.setChannelResolver(new BeanFactoryChannelResolver(context));
+		Message<?> result = template.sendAndReceive("input",
+				MessageBuilder.withPayload("Phil").build());
+		assertEquals("{message=Hello Phil}", result.getPayload().toString());
+	}
+
+}